Ni^(2+)对Ni_xZn_(1-x)Fe_2O_4铁氧体磁性能的影响  

Effect of Ni^(2+) content on magnetic properties of Ni_xZn_(1-x)Fe_2O_4 ferrite

作　　者：王鹏鹏[1] 刘先松[1] 贾道宁[1] 阮征[1] 程春浩[1] 

机构地区：[1]安徽大学物理与材料科学学院,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2011年第9期1309-1312,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51072002);安徽高校省级自然科学研究重点资助项目(KJ2010A008);安徽大学"211工程"学术创新团队资助项目(02303402)

摘　　要：文章采用粉末冶金烧结法制备了不同Ni2+摩尔分数的Ni-Zn铁氧体粉料,并采用XRD、SEM、VSM对粉体进行表征,采用MATS-2000型磁性材料自动测量仪对环形磁芯进行测量。研究结果表明:样品的比饱和磁化强度随x的增大先增大后减小,在x=0.6达到最大值43.82 A·m/kg;环形磁芯的剩磁随x的增大先增大后减小,在x=0.2达到最小值0.31 T;内禀矫顽力随x增大先减小后增大,在x=0.6达到最小值3.9 kA/m。Ni-Zn ferrites with NixZn1-xFe2O4（with x=0.2,0.4,0.6,0.8） were prepared by the powder metallurgy sintering method.Ni-Zn ferrites powder were characterized by X-ray powder diffraction（XRD）,scanning electron microscopy（SEM）,and vibrating sample magnetometer（VSM）.Magnetic properties of Ni-Zn ferrites circular magnetic core were studied by MATS-2000 automatic magnetism measuring instrument.It was found that the saturation magnetization of NixZn1-xFe2O4 powder increased firstly and decreased afterwards with the increase of x,and reached its maximum of 43.8 A·m/kg when x=0.6.The residual magnetic flux density（Br） of NixZn1-xFe2O4 circular magnetic core increased and then decreased with the increase of x,and reached its minimum of 0.31 T when x=0.2.The coercive force（Hc） decreased and then increased with the increase of x,and reached its minimum of 3.9 kA/m when x=0.6.

关 键 词：NI-ZN铁氧体 粉末治金烧结法 磁性能 

分 类 号：TU411.1[建筑科学—岩土工程]